Combined brick kiln and drier



y 92 N. u. LUDWIG COMBINED BRI CK KILN AND DRIER Original Filed Max 20. 1922 amma Patented May 10, 1927.

raters UNITED STATES, PATENT OFFICE.

NICHOLAS U. LUDWIG,

OF BUFFALO, NEW YORK,.ASSIG1\TOR OF ONE-THIRD TO GEORGE W. WEYAND, OF BUFFALO, YORK.

COMBINED BRICK KILN AND DRIER.

Original application filed May 20, 1922,, Serial No. 562,419. Divided and this application filed January 2, 1925. 1, Serial No. 209.

This invention relates to the general class of plastic and earthenware apparatus, and more particularly to kilns employed for drying and burning materials that are presented to zones of the apparatus while traveling horizontally, the said invention being classed as a kiln for horizontally traveling material.

It is an object of the invention to provide a plurality of firing cavities where burners for liquid or gaseous fuel are stationed, as-

sociated with means for supplying the fuel r to the burners, and the provisionv of an open wall thereabove preferably formed by superimposed layers of'bricks arranged to produce an open-work structure through which the products of combustion from the burners may circulate and from which they will find their way to the tunnel, it being understood that the said tunnel is elongated on each side of the firing zone, in order that bricks on carriers, or the material to be burned or treated will be vgradually heated on approaching the firing zone and will gradually cool as in passing from the firing zone to the tunnel exit.

It is a further object of this invention to produce cars adapted to run on suitable tracks within the tunnel, the said cars having longitudinally extending troughs at their sides adapted to contain a refractory sealing agent in which a rib, fin or the like, forming a stationary part of the tunnel, extends to guard against the escape of heat and to prevent the bottom of the tunnel from becoming fouled through the deposit of sand or the like.

It is a further object of this invention to produce an apparatus of the character inclicated in which the cars have interlocking or interengaging joints at their ends which serve to prevent the circulation of air and the escape of heat from the zone of the kiln tunnel in which the bricks are stored or being transferred while they are burned.

It is a further object of this invention to produce an apparatus of the character i11 dicated which will possess advantages in points of efficiency and simplicity, the same being comparatively inexpensive to produce.

With the foregoing and other objects in view, the invention consists in the details of construction, and in the arrangement and combination of parts to be hereinafter more fully set forth and claimed.

In describing the invention in detail, reference will be had to theaccompanying drawings forming part ofthis application wherein like characters denote corresponding parts in the several views, and in which Figure l illustrates a sectional view of a fragment of a kiln showing a car embodying the invention asociated with the joint sealing features of the kiln;

Figure 2 illustrates an enlarged detail sectional View showing the joint between the car and a tunnel wall; and

Figure 3 illustrates a detail sectional view of the meeting ends of the cars. a

In these drawings, 10 denotes the firing Zone of a tunnel structure, associated with certain structural features of the kiln which need not be described in detail, since they are described in an ori 'inal application filed May 20, 1922, Serial l 0. 562,419, which has become Patent 1,523,485 of which this is a division.

The bottom of the tunnel may be provided with any suitable track 11 on which the cars 12 may travel, the bottom 13 of each car having its edges flanged as shown at 14 to fit into grooves 15 formed longitudinally of the side walls 16 and 17 of the tunnel. The purpose of this close fitting relation of the car and tunnel lining or tunnel wall is to prevent the circulation of the heated air downwardly, and this arrangement, therefore, confines the heat to that area of the tunnel occupied by the material to be burned.

As a further means for effectually sealing the upper area of the tunnel from the lower area thereof, depending flanges 18 are formed integral with a lining plate 19 secured in a recess 20 in each side wall of the tunnel, and the beams 21 that are employed for supporting the bottom of the car, or at least the beams at each side of the. car

bottom, have troughs 22 secured on them,

the tunnel and affect the running gear of the cars.

The car bottoms have their ends provided with flanges 25 in such relation to one another that they practically interlock to form a joint which will tend to retard the circulation of heat between the ends of the cars, a condition which is intended to further prevent the escape of heat from the area occupied by the material to be treated.

The arrangement of the sealing trough under the car also serves to increase the capacity of the firing zone of the kiln, as compared with any devices that have the sealing trough above the body of the car.

I claim:

In a combined kiln and drier a tunnel having longitudinally extending grooves in its side walls and longitudinally extending channels therebelow, cars adapted to travel in the tunnel, the said cars having edge flanges fitted in the grooves to produce a stepped .joint between the firing zone and the zone occupied by the wheels of the cars, lining plates in the channels, each of said lining plates having an upper depending flange at the edge of the channel and terminating above the lower edge of the channel, troughs suspended from the cars throughout the lengths of the cars on each side thereof under the flanges and in such relation thereto that the flanges extend through the troughs, and a sealing agent in each trough into which the flanges proj ect.

NICHOLAS U. LUDWIG. 

